[PATCH 5.10 356/406] kcm: Destroy mutex in kcm_exit_net()

Greg Kroah-Hartman
2023-09-17T19:40:44Z

From: Shigeru Yoshida <syoshida@redhat.com>

[ Upstream commit 6ad40b36cd3b04209e2d6c89d252c873d8082a59 ]

kcm_exit_net() should call mutex_destroy() on knet->mutex. This is especially
needed if CONFIG_DEBUG_MUTEXES is enabled.

Fixes: ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module")
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Link: https://lore.kernel.org/r/20230902170708.1727999-1-syoshida@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/kcm/kcmsock.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index 32b516ab9c475..71608a6def988 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -1982,6 +1982,8 @@ static __net_exit void kcm_exit_net(struct net *net)
* that all multiplexors and psocks have been destroyed.
*/
WARN_ON(!list_empty(&knet->mux_list));
+
+ mutex_destroy(&knet->mutex);
}

static struct pernet_operations kcm_net_ops = {
--
2.40.1